Submission #51731

#	Time	Username	Problem	Language	Result	Execution time	Memory
51731		Mamnoon_Siam	Rail (IOI14_rail)	C++17	30 / 100	86 ms	1068 KiB

rail

#include "rail.h"
//#pragma GCC optimize("Ofast,unroll-loops,no-stack-protector")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#include <bits/stdc++.h>
using namespace std;

#define debug(s) cout<< #s <<" = "<< s <<endl
#define all(v) (v).begin(), (v).end()
#define KeepUnique(v) (v).erase( unique(all(v)), v.end() )
#define MEMSET(a,val) memset(a, val, sizeof a)
#define PB push_back
#define endl '\n'

inline int myrand(int l, int r) {
	int ret = rand(); ret <<= 15; ret ^= rand();
	if(ret < 0) ret = -ret; ret %= (r-l+1); ret += l;
	return ret;
}
template <typename F, typename S>
ostream& operator << (ostream& os, const pair< F, S>& p) {
    return os<<"(" <<p.first<<", "<<p.second<<")"; }

typedef pair<int, int> ii;
template<typename T> using min_pq =
	priority_queue<T, vector<T>, greater<T> >;

//int dx[] = {-1, +0, +1, +0};
//int dy[] = {+0, +1, +0, -1};

void findLocation(int N, int first, int location[], int stype[]) {
	stype[0] = 1;
	location[0] = first;

	if(N == 1) return;

	int id = 0, mn = 1e9;
	for(int i = 1; i < N; i++) {
		int temp = getDistance(0, i);
		if(temp < mn) {
			mn = temp;
			id = i;
		}
	} //debug(id);

	stype[id] = 2;
	location[id] = first + getDistance(0, id);

	for(int i = 0; i < N; i++) {
		if(i == 0 or i == id) continue;
		//cout << getDistance(0, i) << ' ' << getDistance(0, id) << ' ' << getDistance(id, i) << endl;
		if(getDistance(0, i) - getDistance(0, id) == getDistance(id, i)) {
			stype[i] = 1;
			location[i] = first - (getDistance(0, i) - 2 * getDistance(0, id));
		} else {
			stype[i] = 2;
			location[i] = first + getDistance(0, i);
		}
	}

	//for(int i = 0; i < N; i++) cout << stype[i] << ' ' << location[i] << endl;
}

Compilation message (stderr)

rail.cpp: In function 'int myrand(int, int)':
rail.cpp:17:2: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  if(ret < 0) ret = -ret; ret %= (r-l+1); ret += l;
  ^~
rail.cpp:17:26: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
  if(ret < 0) ret = -ret; ret %= (r-l+1); ret += l;
                          ^~~

• Subtask 1: 8 / 8
• Subtask 2: 22 / 22
• Subtask 3: 0 / 26
• Subtask 4: 0 / 44